Metering Drive Device Pressure Feedback Control
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Solution Overview
Problem
Existing metering and mixing apparatuses for multi-component substances face challenges in preventing unintended discharge of components during operation, lacking effective control mechanisms to ensure synchronized discharge of multiple components.
Innovation Solution
A driving device with a detection unit to monitor reaction pressure and a controller to manage the drive function, ensuring synchronized discharge of components by using a transmission unit with a movable assembly and a microswitch, which generates a detection signal when preset pressure values are reached, and a switchable coupling device to connect the discharging rod with the drive motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a discharging piston with threading is used to create forward drive by rotating, then the discharge of substance components can be controlled, but unintended discharge of components may occur during operation
Solution Approach 1:
The patent employs a detector that monitors reaction pressure during discharge and generates detection signals when preset pressure values are reached. This feedback mechanism allows the controller to adjust the drive function in real-time, ensuring that component B is only discharged when component A is properly discharged, thereby preventing unintended discharge while maintaining controlled operation.
Solution Approach 2:
The system performs preliminary detection of reaction pressure before allowing discharge to proceed. The detector monitors pressure buildup during discharge of substance components, and only when the correct pressure conditions are met does the controller enable further discharge. This preliminary action ensures proper sequencing and prevents premature or unintended discharge of components.
2Adaptability or versatility
If multiple cartridge holders are used for multi-component substances, then mixing capability is improved, but synchronization of discharge becomes more complex
Solution Approach 1:
The patent uses a single drive motor connected through a transmission unit to control multiple discharging pistons. This multi-functional transmission system allows one drive source to simultaneously control the discharge of multiple substance components, simplifying the overall system architecture while maintaining the capability to handle multi-component substances with different viscosity requirements.
Solution Approach 2:
The detector monitors reaction pressure from each cartridge holder during discharge and provides feedback to the controller. Based on this feedback, the controller adjusts the drive function to synchronize the discharge of multiple components, ensuring that each component is discharged at the appropriate time and rate, thereby managing the complexity of multi-component coordination.
3Measurement precision
If reaction pressure detection is implemented, then discharge control precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces a detector as an intermediary component that measures reaction pressure during discharge and converts it into detection signals. This intermediary device bridges the gap between the physical discharge process and the electronic control system, enabling precise monitoring of pressure conditions without requiring direct complex control mechanisms at each discharge point.
Solution Approach 2:
The system replaces complex mechanical synchronization mechanisms with an electronic control approach. Instead of using purely mechanical linkages to coordinate multiple discharging pistons, the patent uses a detector to monitor pressure and a controller to electronically adjust the drive function, substituting mechanical complexity with sensor-based feedback control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures that component B is only discharged when component A is properly discharged, preventing unintended discharge and allowing for precise control over the discharge process, thereby ensuring accurate mixing and dispensing of multi-component substances.
Implementation Method 1
a detector configured to detect at least a reaction pressure when such a reaction pressure builds up during discharging of at least one of the substance components
Implementation Method 2
a movable assembly which will move under influence of the reaction pressure built up during discharging of the substance component that generates the reaction pressure in a detection area of the detector
Data Source
AI summary
A driving device of a metering and mixing apparatus for multi-component substances is disclosed, which driving device can have at least two cartridge holders for holding interchangeable cartridges with individual substance components, a discharging apparatus for simultaneously discharging the substance components from the cartridges through component outlets with the aid of discharging pistons entering the cartridge holder or cartridges, and a mixing apparatus which is connected to the component outlets, for mixing the discharged substance components and discharging the latter in mixed form, and a transmission unit for the connection of a drive motor, wherein the transmission unit can have a detector for detecting at least one counter pressure which builds up during the discharging of at least one of the substance components, and a controller, which is connected on an inlet side to the detector for bringing about a driving control function in response to a detection result.